*{
    padding: 0;
    margin: 0;
    list-style: none;
    box-sizing: border-box;
    text-decoration: none;
}

.box{
    width: 800px;
    margin: 30px auto 0 ;
}
.box h3{
    line-height: 40px;
    font-size: 18px;
    color: red;
    font-family: "楷体";
}

.btns{
    margin: 15px;
}
.btns button{
    padding:10px 20px;
    margin: 0 20px;
    color: #FFF;
    border:0;
    border-radius: 8px;
}
.btnAdd{
    background: #106CC8;
}
.delAll{
    background: orangered;
}

.tags{
    overflow: hidden;
}

.tags li{
    width: 175px;
    float: left;
    margin: 10px ;
    background: #009688;
    font-size: 14px;
    color: #FFF;
    height: 40px;
    line-height: 40px;
}
.tags li span{
    float: right;
    cursor: pointer;
}